1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/packed/issue-46152.rs b/src/test/ui/packed/issue-46152.rs
new file mode 100644
index 000000000..fb1c9fb78
--- /dev/null
+++ b/src/test/ui/packed/issue-46152.rs
@@ -0,0 +1,24 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(unused_variables)]
+#![feature(unsize, coerce_unsized)]
+
+#[repr(packed)]
+struct UnalignedPtr<'a, T: ?Sized>
+    where T: 'a,
+{
+    data: &'a T,
+}
+
+fn main() {
+
+    impl<'a, T, U> std::ops::CoerceUnsized<UnalignedPtr<'a, U>> for UnalignedPtr<'a, T>
+        where
+        T: std::marker::Unsize<U> + ?Sized,
+        U: ?Sized,
+    { }
+
+    let arr = [1, 2, 3];
+    let arr_unaligned: UnalignedPtr<[i32; 3]> = UnalignedPtr { data: &arr };
+    let arr_unaligned: UnalignedPtr<[i32]> = arr_unaligned;
+}